diff --git a/api/grpc/node/node.pb.go b/api/grpc/node/node.pb.go
index ab7060c05c..10da698b3b 100644
--- a/api/grpc/node/node.pb.go
+++ b/api/grpc/node/node.pb.go
@@ -1095,6 +1095,8 @@ type BatchHeader struct {
 	BatchRoot []byte `protobuf:"bytes,1,opt,name=batch_root,json=batchRoot,proto3" json:"batch_root,omitempty"`
 	// The Ethereum block number at which the batch is dispersed.
 	ReferenceBlockNumber uint32 `protobuf:"varint,3,opt,name=reference_block_number,json=referenceBlockNumber,proto3" json:"reference_block_number,omitempty"`
+	// number of blobs in the batch
+	NumBlobs uint32 `protobuf:"varint,4,opt,name=num_blobs,json=numBlobs,proto3" json:"num_blobs,omitempty"`
 }
 
 func (x *BatchHeader) Reset() {
@@ -1143,6 +1145,13 @@ func (x *BatchHeader) GetReferenceBlockNumber() uint32 {
 	return 0
 }
 
+func (x *BatchHeader) GetNumBlobs() uint32 {
+	if x != nil {
+		return x.NumBlobs
+	}
+	return 0
+}
+
 // Node info request
 type NodeInfoRequest struct {
 	state         protoimpl.MessageState
@@ -1386,60 +1395,61 @@ var file_node_node_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/api/proto/node/node.proto b/api/proto/node/node.proto
index a9f4afb4d0..da87e153c7 100644
--- a/api/proto/node/node.proto
+++ b/api/proto/node/node.proto
@@ -202,6 +202,8 @@ message BatchHeader {
 	bytes batch_root = 1;
 	// The Ethereum block number at which the batch is dispersed.
 	uint32 reference_block_number = 3;
+	// number of blobs in the batch
+	uint32 num_blobs = 4;
 }
 
 // Node info request